• Author's Catalogue. 327 
Penfield, S. L. (and L. V. Pirsson), Editors 
Contributions to mineralogy and petrography, from the laboratories 
of the Sheffield Scientific School of Yale University. Yale Bicentennial 
Publications, August, 1901 pp. 482. New York, Charles Scribner's 
Sons. igoi. 
Pirsson, L. V. (S. L. Penfield and) Editors 
Contributions to Mineralogy and Petroeraphy from the laboratories 
of the Sheffield Scientific School of Yale University. Yale Bicentennial 
Publications. August, igoi. pp. 482. New York. Charles Scribner's 
Sons. 1901. 
Russell, I. C. 
Geology and water resources of Nez Perce county, Idaho, U. S^ 
Geol. Sur., Water Supply and Irrigation papers, Nos. 53 and 54, pp. 
141. plates. 1901. 
Shlmek, B. 
Recent and fossil molluscs at Iowa City. (Bull. Lab. Nat. Hist., 
Univ. Iowa, vol. 5, pp. 197-212. May, 1901.) 
Smith, James Perrin 
The border line between Paleozoic and Mesozoic in western Amer- 
ica. (Jour. Geol., vol. 9, pp. 512-521. Sept. -Oct., 1901. 
Turner, H. W. 
Perknite (Lime-magnesia rocks.) (Jour. Geol., vol. 9, pp. 907— 
911, Sept.-Oct., 1901). 
Tyrrell, J. B. 
On the east shore of lake Winnipeg, and the adjacent parts of 
Manitoba and Keewatin. (Geol. Sur. ^an., Ann. Rep., vol. 11, re- 
port G. pp. 89. 1901). 
Upham, Warren 
Preglacial erosion in the course of the Niagara gorge, and its 
relation to estimates of Post-glacial time. (Am. Geol., vol. 28. pp. 
235-244. Oct., igoi). 
Winchell, Alexander N. 
Note on certain copper minerals. (Am. Geol., vol. 28, pp. 244-246. 
Oct.,' 1901). 
Walker, B. E. 
List of the published writings of Elkanah Billings, F. G. S. Paleon- 
tologist to the Geological Survey of Canada, 1856-1876. (Can. Rec. 
Sci., vol. 8. July, 1901. pp. 366-388. 
White, David 
Mr. Lacoe's relations to science. (Proc. and Coll. Wj-o. Hist, and 
Geol. Soc, vol. 6, pp. 55-60. Wilkesbarre, Pa. 1901.) 
Wood, E. 
Crinoid from the Hamilton of Charlestown, Indiana. (Am. Jour. 
Sci., vol. 8, pp. 297-300. plate 5. Oct., 1901.) 
Wortman, J. L. 
Studies of Eocene Mammalia, in the Marsh collection. Peabody 
Museum. (Am. Jour. Sci.. vol. 12. Oct., 1901. pp. 281-296). 
